Xamarin for Objective-C开发者

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• 属性

Objective-C

  @property (nonatomic, copy) NSString *str; 

C#

   public string Str { get; set; } 

• Get Set

Objective-C

  - (void)setStr:(NSString *)str 

C#

  string str;
  public string Str {
      get {
          return str;
      }
      set {
          str = value;
      }
  }

• 泛型

Objective-C

  MyTextField *myTextField = [[MyTextField alloc] init];
  MyTextField *myTextField2 = [[MyTextField alloc] init];
  NSArray<MyTextField *> *array = @[myTextField, myTextField2];

C#

  MyEntry entry1 = new MyEntry();
  MyEntry entry2 = new MyEntry();
  List<MyEntry> myList = new List<MyEntry> { entry1, entry2 };

• 自定义类初始化方法
  Objective-C

  //初始化
  - (instancetype)init {
      self = [super init];
      if (self) {
          self.backgroundColor = [UIColor redColor];
      }
      return self;
  }

  - (instancetype)initWithFrame:(CGRect)frame {
      self = [super initWithFrame:frame];
      if (self) {
          self.backgroundColor = [UIColor redColor];
      }
      return self;
  }

  //带参数的初始化
  - (instancetype)initWithStr:(NSString *)str {
      self = [super init];
      if (self) {
          self.backgroundColor = [UIColor redColor];
          self.text = str;
      }
      return self;
  }

C#

    public class MyEntry : Entry
    {
        //初始化
        public MyEntry()
        {
            this.BackgroundColor = Color.Red;
        }

        //带参数的初始化
        public  MyEntry(string str){
            this.BackgroundColor = Color.Red;
            this.Text = str;
        }
    }

• 分类

Objective-C

  #import "UITextField+Extensions.h"

  @implementation UITextField (Extensions)

  - (void)textStr:(NSString *)str {
      self.text = str;
  }

  @end

C#

  public static class EntryExtensions
      {
          public static void TextStr(this Entry entrt, string str)
        {
              entrt.Text = str;
        }
    }

• 动画

Objective-C

  [UIView animateWithDuration:1.0 animations:^{
      self.view.alpha = 0.0;
  }];

C#

  Animate(1.0, () => {
      self.view.alpha = 0.0;
  });